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A practical wide-field Raman imaging method with high spectral and spatial resolution
- Source :
- The Review of scientific instruments. 89(8)
- Publication Year :
- 2018
-
Abstract
- Raman imaging has a great advantage in characterizing inhomogeneous systems. A practical wide-field Raman imaging platform is developed that shows major improvements on imaging speed, sensitivity, and resolution. Different from the traditional Raman imaging systems using the wavelength-fixed lasers and the chromatic dispersion devices, this system adopts an inverted architecture, integrated with a tunable laser and the wavelength-fixed filters. Owing to the high transmission of the fixed filters, the imaging sensitivity can be improved 5-10 times in comparison to the present wide-field Raman imaging setups using liquid-crystal tunable filters. Via combining with the high-power tunable laser, Raman images could be obtained in minutes and the Raman shift of the images could be tuned easily and accurately. The resolution of this system can reach 1.5 cm-1 in the spectrum and 490 nm in space, which could provide more fingerprint details of the analytes. This effective Raman imaging method allowing us to see chemical spatial variations on microscale is anticipated to be widely applied in scientific research fields.
- Subjects :
- Imagination
Materials science
business.industry
media_common.quotation_subject
010401 analytical chemistry
Resolution (electron density)
02 engineering and technology
021001 nanoscience & nanotechnology
Laser
01 natural sciences
0104 chemical sciences
law.invention
symbols.namesake
Optics
law
symbols
Sensitivity (control systems)
0210 nano-technology
Raman spectroscopy
business
Instrumentation
Image resolution
Microscale chemistry
Tunable laser
media_common
Subjects
Details
- ISSN :
- 10897623
- Volume :
- 89
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- The Review of scientific instruments
- Accession number :
- edsair.doi.dedup.....a085f938dc19c04c8128ceb53aa612d6